St George, JD 2009, 'Risk assessment for urban development of land subject to ground movements from abandoned old workings', in AB Fourie & M Tibbett (eds), Mine Closure 2009: Proceedings of the Fourth International Conference on Mine Closure
, Australian Centre for Geomechanics, Perth, pp. 561-568, https://doi.org/10.36487/ACG_repo/908_44
The presence of old abandoned workings underlying existing residential or planned residential development
is a problem to land territorial authorities, developers and residents. Where the regulations controlling land
development are managed on an effects-based approach, the hazards from abandoned underground
workings present a particular problem to territorial authorities since they have overall control of
development at any location. This in some way implies the acceptance of these risks and the acceptance of
liability should anything occur. This paper will focus on the subsidence zone affected by surface intervention
such as crownholes and the need to define the boundary of this zone in a practical engineering sense. A
probabilistic framework is used to model the geological and mining uncertainties inherent in this type of
analysis. The consequences of an event occurring and any remedial action taken are combined with the
uncertainties to express the outcome in terms of risk. This approach is compared to other natural and man-
made hazards influencing land development.
Bruhn, W., Magnuson, M.O. and Gray, R. (1981) Subsidence over abandoned mine in the Pittsburgh Coalbed, In
Proceedings 2nd International Conference on Ground movements and Structures, J. Geddes (ed), Pentech Press,
London, pp. 142–156.
Cauvin, M., Verdel, T., Salmon, R. and Didier, C. (2006) Mapping expert uncertainties or confidence level in mining
risk prevention plans, International Conference on Geohazards, ECI, F. Nadim, R. Pöttler, H. Einstein, H.
Klapperich and S. Kramer (eds), Lillehammer, Norway, paper number 31.
Cole, K.W. (1987) Building over abandoned shallow mines, Ground Engineering, May, pp. 14–30.
Fowell, R.J. and Taylor, J.A. (2007) Mining instability and the misuse of the 10-times-seam thickness rule, 11th
Congress of International Society for Rock Mechanics, ed. L. Ribeiro e Sousa, C. Olalla and N. Grossman,
Gray, R.E. and Bruhn, R.W. (1982) Subsidence above abandoned coal mines, in State-of-the-art of Ground Control in
Longwall Mining and Mining Subsidence, Chapter 23 Subsidence planning and control, AIME, 19 p.
Hawkins, G.C. (2005) Geotechnical investigation of the abandoned mine workings under Newcastle, Australian
Geomechanics, Vol. 40, No. 1, pp. 61–78.
Healy, P.R. and Head, J.M. (1984) Construction over abandoned mine workings, CIRIA Special publication, 32, PSA
Civil Engineering Technical Guide, Vol. 34, 95 p.
Hoek, E. (2007) Practical Rock Engineering, viewed 29 May 2009
Risk assessment for urban development of land subject to ground movements from J.D. St George
abandoned old workings
568 Mine Closure 2009, Perth, Australia
Marino, G.G. (1990) Siting of a prison complex above abandoned underground coal mine, Journal Geotechnical and
Geo-Environmental Engineering, American Society of Civil Engineers, 124, 10, pp. 954–964.
Piggott, R.J. and Eynon, P. (1978) Ground movements arising from the presence of shallow mine workings,
Proceedings International Conference of Large Ground Movements and Structures, J. Geddes (ed), Pentech
Press, London, pp. 745–780.
Reddish, D.J., Yao, X.L. and Dunham, R.K. (1995) Risk assessment of surface structural damage due to mining
subsidence – and integrated computer-based approach, Trans IMM, Sect A, 104, pp. A139–A143.
Richards, L.R., Mazengarb, C., Beetham, R., Brathwaite, R. and Smith, W. (2002) Waihi underground mine workings,
Stage II investigations, IGNS Report 2002/46, 111 p.
Stewart, M.G. and Love, A. (2005) Uncertainty, economic risk analysis and risk acceptance criteria for mine
subsidence, Australian Geomechanics, Vol. 40, No. 1, pp. 79–90.
St George, J.D. (2002) Surface subsidence modelling for prediction of settlements from thick seam partial extraction,
AusIMM Conference, Auckland, 6/02, pp. 407–412.
Wardell, K.W. and Wood, J.C. (1965) Ground instability arising from old shallow mine workings, Proceedings of the
Midland Soil Mechanics and Foundation Society, paper number 36, 7, pp. 5–30.